Species · BCR 19 · BBS 2025 Release · 1966–2024
Little Blue Heron In Central Mixed Grass Prairie
Little Blue Heron in Central Mixed Grass Prairie has collapsed: down 97% on the route-weighted index since 1969.
-97%Since 1969
39Routes In Region
57Years
Notable Signals
long arc declinecomputed index
Little Blue Heron has collapsed in Central Mixed Grass Prairie: down 97% on the route-weighted index since 1969.
Forecast
If the recent trend holds, Little Blue Heron in Central Mixed Grass Prairie is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–0.81). A 5-year backtest shows a typical error of ±146%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.00Projected 2029 index
0.00–0.8195% range
±146%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.04 | 0.00 | 0.85 |
| 2026 | 0.03 | 0.00 | 0.84 |
| 2027 | 0.02 | 0.00 | 0.83 |
| 2028 | 0.01 | 0.00 | 0.82 |
| 2029 | 0.00 | 0.00 | 0.81 |
Routes In Central Mixed Grass Prairie
| Cookietown | OKLAHOMA | 7 | 2002 |
| Randlett | OKLAHOMA | 3 | 1991 |
| Eagle City | OKLAHOMA | 3 | 2010 |
| Weinert | TEXAS | 3 | 1994 |
| Douglas | OKLAHOMA | 2 | 1991 |
| Chester | OKLAHOMA | 2 | 1988 |
| Tegarden | OKLAHOMA | 2 | 1990 |
| Rosston | OKLAHOMA | 2 | 1996 |
| Hunter | OKLAHOMA | 2 | 2006 |
| Woodward | OKLAHOMA | 2 | 2002 |
| Elgin | OKLAHOMA | 2 | 2005 |
| Wellington | KANSAS | 1 | 2021 |
| Dalton | KANSAS | 1 | 1981 |
| Coldwater | KANSAS | 1 | 2004 |
| Buckeye | KANSAS | 1 | 1992 |
| Albert | KANSAS | 1 | 2021 |
| Hanover | KANSAS | 1 | 2012 |
| Hollenberg | KANSAS | 1 | 2023 |
| Berwet | KANSAS | 1 | 2015 |
| Reed | OKLAHOMA | 1 | 2009 |
| Verden | OKLAHOMA | 1 | 2013 |
| Grimes | OKLAHOMA | 1 | 2024 |
| Erick | OKLAHOMA | 1 | 2023 |
| Wakita | OKLAHOMA | 1 | 2012 |
| Cooperton | OKLAHOMA | 1 | 2023 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.